增碳剂简介
增碳剂是炼钢时用的一种添加剂，是生产钢材不可缺少的原料，另外也是生产电极糊的原料。增碳剂的原料有很多种，生产工艺也各异，有木质碳类，煤质碳类，焦炭类，石墨类等，增碳剂一般指经过石墨化的增碳剂，在高温条件下，碳原子的排列呈石墨的微观形态，所以称之为石墨化，石墨化可以降低增碳剂中杂质的含量，提高增碳剂的碳含量，降低硫含量。
石墨增碳剂指标
测试项目 | 指标 | 测试项目 | 指标 |
挥发分 | ≤0.5% | 硫 | ≤0.05% |
水分 | ≤0.5% | 氮 | ≤0.03%（300ppm） |
固定碳 | ≥98.5% | 灰分 | ≤0.5% |
石油焦增碳剂指标
测试数据 | 参数 | 测试数据 | 参数 |
硫含量 | 0.5-3 | 挥发分 | 12-18 |
灰分 | 0.3-1.2 | 水分 | ≤3 |
硅含量 | ≤0.08 | 铁含量 | ≤0.08 |
真密度 | 2.08-0.13 | 粉焦量 | 25% |
煤质增碳剂指标
测试项目 | 指标 | 测试项目 | 指标 |
固定碳 | 90-95% | 挥发分 | 0.5-1.5% |
灰分 | 3-7% | 水 分 | ≤0.5% |
硫 | ≤0.3% | 粒度：0-10mm按客户需求定制 | |
增碳剂使用方法
炉内投入法：增碳剂适于在感应炉中熔炼使用，但依据工艺要求具体使用也不尽相同。
1、在中频电炉熔炼中使用增碳剂，可按配比或碳当量要求随料加入电炉中下部位，回收率可达95%以上；
2、如果碳量不足调整碳分时，先打净炉中熔渣，再加增碳剂，通过铁液升温，电磁搅拌或人工搅拌使碳溶解吸收，回收率可在90%左右，如果采用低温增碳工艺，即炉料只熔化一部分，熔化的铁液温度较低的情况下，全部增碳剂一次性加入铁液中，同时用固体炉料将其压入铁液中不让其露出铁液表面。这种方法铁液增碳可达1.0%以上。
炉外增碳：
1、包内喷石墨粉；选用石墨粉做增碳剂，吹入量为40kg/t，预期能使铁液含碳量从2%增到3%。随着铁液碳含量逐渐升高，碳量利用率下降，增碳前铁液温度1600℃，增碳后平均为1299℃。喷石墨粉增碳，一般采用氮气做载体，但在工业生产条件下，用压缩空气更方便，而且压缩空气中的氧燃烧产生CO,化学反应热可补偿部分温降，而且CO的还原气氛利于改善增碳效果。
2、出铁时使用增碳剂；可将100—300目的石墨粉增碳剂放到包内，或从出铁槽随流冲入，出完铁液后充分搅拌，尽可能使碳溶解吸收，碳的回收率在50%左右。
宁夏龙腾顺达活性炭有限公司
联系人：唐芷文
手 机：
Q Q ：3195997413
邮 箱：3195997413@qq.com
地 址：宁夏石嘴山市大武口区白银北路以东
网 址：*
Introduction of recarburizer
It is an additive that is used in steelmaking. It is an indispensable raw material for the production of steel, and also the raw material for making electrode paste. Recarburizer there are many kinds of raw materials, production process is also different, there are wooden carbon, coal carbon, coke, graphite class, such as recarburizer generally refers to after graphitization of carburant, under the condition of high temperature, carbon atoms arranged in the microstructure of graphite, so called the graphitization, graphitization can reduce the content of impurity in the carburant, improve the carbon content of carburant, reduce sulfur content.
The use of carbon dioxide
Internal input method: it is suitable for smelting in induction furnace, but it is not the same according to the process requirement.
In the smelting of medium frequency electric furnace, the use of a carbon additive, can be added to the lower part of the electric furnace according to the match or carbon equivalent, and the recovery rate can be up to 95%.
2, if the lack of carbon adjustment, the first dozen net furnace slag, plus carburant, by raising the temperature of molten iron, or artificial electromagnetic stirring to dissolve carbon absorption, the recovery rate is around 90%, if the low-temperature carbonization process, the melt furnace charge only part of the molten iron liquid under the condition of low temperature, all recarburizer one-time in liquid iron, at the same time with solid charge to press it into the liquid iron don't let it show liquid iron surface. This method can increase carbon by more than 1.0 percent.
The carbonization stove:
1, spray graphite powder in the bag; The use of graphite powder is used as a carboloy, and the amount is 40kg/t, which is expected to increase the amount of iron content from 2% to 3%. With the carbon content in liquid iron is increased, the utilization rate of carbon, increase carbon before liquid iron temperature of 1600 ℃, an average of 1299 ℃ after carburization. Carbon graphite powder spraying, generally by nitrogen as the carrier, but under the condition of industrial production, it is more convenient to use compressed air, oxygen and compressed air combustion produces CO, the chemical reaction heat can compensate part of the temperature drop, and the effect of reducing atmosphere conducive to improve carburization CO.
Use a carbon-based agent when the iron is out; Purpose can be 100-300 graphite powder carburant in package, or from the iron tank with flow into and out of the liquid iron after fully mixing, as far as possible to dissolve carbon absorption, carbon recovery rate is around 50%.
Ningxia longteng activated charcoal co., LTD
Lian: zhi wen
Hand machine:
Q: 3195997413
Mailboxes: 3195997413@qq.com
Site: east of baiyin, the great wukou district of ningxia
Site: *? SPM = 0.0.0.0. SSEfoR
宁夏龙腾顺达活性炭有限公司
联系人：唐芷文
手 机：
Q Q ：3195997413
邮 箱：3195997413@qq.com
地 址：宁夏石嘴山市大武口区白银北路以东
网 址：*
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